Electric grass trimmer housing



FIG. 1 is a perspective view of an electric grass trimmer housing showing my new design, it being understood that the broken lines are for illustration purposes only;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for an electric grass trimmer housing, substantially as shown. 